CN102705367A - Heavy-duty permanent magnetic attraction bearing with assembled permanent magnetic ring structure - Google Patents
Heavy-duty permanent magnetic attraction bearing with assembled permanent magnetic ring structure Download PDFInfo
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- CN102705367A CN102705367A CN2012101753413A CN201210175341A CN102705367A CN 102705367 A CN102705367 A CN 102705367A CN 2012101753413 A CN2012101753413 A CN 2012101753413A CN 201210175341 A CN201210175341 A CN 201210175341A CN 102705367 A CN102705367 A CN 102705367A
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Abstract
The invention belongs to the technical field of magnetic suspension bearings, and relates to a heavy-duty permanent magnetic attraction bearing with an assembled permanent magnetic ring structure. The bearing consists of a permanent magnetic fixed ring component and a magnetic conducting moving ring, wherein an assembled permanent magnetic ring in the permanent magnetic fixed ring component is a round magnetic ring formed by assembling fan-shaped permanent magnets, is adsorbed on a stable thin steel disc and is arranged in an isolating ring sleeve; a permanent magnetic assembled ring component is adsorbed on a magnetic conducting fixed ring and locked by a fixing screw; the magnetic conducting moving ring is arranged on a shaft on the upper part of a rotor in a threaded connection mode; the permanent magnetic fixed ring component is arranged above the magnetic conducting moving ring; an axial clearance is formed between the permanent magnetic fixed ring component and the magnetic conducting moving ring; and 90 to 95 percent of weight of the rotor is borne by the permanent magnetic attraction of the permanent magnetic fixed ring component and the magnetic conducting moving ring under the action of a high-intensity magnetic field generated by the assembled permanent magnetic ring. A large-size permanent magnetic ring is formed by combining the fan-shaped permanent magnets, so that the size limitation of a magnetizer is broken, the permanent magnetic ring of the heavy-duty permanent magnetic bearing is manufactured, and the bearing is suitable for heavy-duty high-speed rotating shaft systems such as a high-speed centrifuge, a molecular pump and a flywheel shaft system.
Description
Technical field
The invention belongs to the magnetic suspension bearing technical field, particularly a kind of heavy permanent magnetism suction bearing with assembly unit permanent-magnetic clamp structure.
Background technique
The rotating machinery that exists many vertical shaft to be in the industry is such as centrifuge, molecular pump, flywheel energy storage power supply unit etc.For realizing the high speed rotating supporting, reduce bearing loss and improving bearing life, extensively adopt magnetic suspension bearing.Magnetic suspension bearing mainly comprises permanent-magnet suspension bearing, electromagnetic suspension bearing and hybrid magnetic suspension bearing etc.
Permanent-magnet suspension bearing generally adopts loop configuration, is made up of stationary ring and rotating ring, and the central axes of two rings also overlaps with the rotor axis of rotating machinery; There is certain axial clearance between two rings; Stationary ring is installed on the machine case through construct, and rotating ring is connected with rotor coaxial is affixed, during permanent-magnet suspension bearing work; Rotating ring rotates with rotor high-speed; Magnetic attraction between rotating ring, the stationary ring or repulsive force are realized the axial suspension of rotor, and the suction of permanent-magnet suspension bearing or repulsive force are unstable, and general cooperative mechanical positioning bearing of permanent-magnet suspension bearing and electromagnetism ACTIVE CONTROL bearing use.Permanent-magnet suspension bearing is divided into permanent magnetism suction bearing and permanent magnet expulsive force bearing; Permanent magnetism suction bearing and rolling bearing constitute mixing bearing axle system; The two ends of the axle of the rotor mechanical positioning bearing through being rolling bearing respectively constitute with machine case and are rotationally connected, mechanical bearing axially guarantee stationary ring and the axial and radial clearance that comprises rotary components such as rotating ring, rotor and axle with limit function radially.Permanent magnetism suction between permanent magnetism machinery mixing bearing fitness for purpose permanent magnetism static components and the rotating ring is 90～95% of rotor weight.
Permanent magnetism suction bearing is a kind of passive magnetic bearing, and consumed energy is not in suspension born the weight that most of axle is in high speed centrifuge, molecular pump, flywheel shaft system, realizes little loss, the long lifetime supporting of axle system.Usually the bearing capacity of annular permanent magnet suction bearing is limited, is no more than 1000N.Permanent magnetism suction bearing capacity is subject to the size of permanent-magnetic clamp, and the rotational speed of permanent magnetism suction bearing is subject to the strength failure of magnetic conduction rotating ring.The present domestic magnetizer specification limits that receives, the magnet ring external diameter is difficult to greater than 120mm, so the permanent magnetism suction bearing of existing technology can not be used for heavy machinery.For permanent magnetism suction bearing is used for heavy machinery, especially the diameter of rotor shaft is that the above heavy high-speed rotating shaft of 60mm or 60mm is to improve the permanent magnetism static components of permanent magnetism suction bearing.
Summary of the invention
The objective of the invention is to solve that background technique is described that permanent magnetism suction bearing is used for heavy machinery; Especially the diameter of rotor shaft is the problem that the above heavy high-speed rotating shaft of 60mm or 60mm is, a kind of heavy permanent magnetism suction bearing with assembly unit permanent-magnetic clamp structure is provided.
Technological scheme of the present invention is following:
Heavy permanent magnetism suction bearing with assembly unit permanent-magnetic clamp structure is made up of permanent magnetism static components 1 and magnetic conduction rotating ring 2; Magnetic conduction rotating ring 2 is coaxial affixed with the axle on rotor 4 tops that vertically are provided with; The two ends up and down of the axle of rotor 4 are rotationally connected with lower bearing 5 and machine case formation through the upper bearing (metal) 3 that is rolling bearing respectively; Permanent magnetism static components 1 is fixed on the machine case on magnetic conduction rotating ring 2; Permanent magnetism static components 1 and magnetic conduction rotating ring 2 are coaxial and be enclosed within on the axle on rotor 4 tops, between the axle on the endoporus of permanent magnetism static components 1 and rotor 4 tops radial clearance are arranged, and permanent magnetism static components 1 and magnetic conduction rotating ring 2 have axial clearance; It is characterized in that; Said permanent magnetism static components 1 is made up of magnetic conduction stationary ring 101, set screw 102 and permanent magnetism assembly unit ring member 103, and said permanent magnetism assembly unit ring member 103 is formed the one circular ring of barrier cuffs 1031 for being made up of sidewall and base ring by barrier cuffs 1031, assembly unit permanent-magnetic clamp 1032 and stable thin steel disk 1033; The width of base ring is 5～10mm; The thickness of base ring is 1～2mm, affixed 12 the magnetic ring component locking rings 1034 of level uniformly-spaced in the outside of sidewall, and the interior circle of magnetic ring component locking ring 1034 is a worm structure; The circular magnet ring of assembly unit permanent-magnetic clamp 1032 for being assembled into by 4～8 identical fan-shaped permanent magnets 1035; Internal diameter and the external diameter with assembly unit permanent-magnetic clamp 1032 is identical respectively with external diameter for the internal diameter of the stable thin steel disk 1033 of ring, assembly unit permanent-magnetic clamp 1032 coaxial being adsorbed on the lower surface of stablizing thin steel disk 1033, the internal diameter loose fit of the external diameter of assembly unit permanent-magnetic clamp 1032 and stable thin steel disk 1033 and the sidewall of barrier cuffs 1031; Assembly unit permanent-magnetic clamp 1032 is embedded in the barrier cuffs 1031 with stable thin steel disk 1033, and the upper surface of stable thin steel disk 1033 and the upper edge of barrier cuffs 1031 are in same plane;
Said magnetic conduction stationary ring 101 is a circle structure; The axial cross section of magnetic conduction stationary ring 101 is the L type; Center hole is the axis hole that passes the axle on rotor 4 tops, and its straight diameter ratio shaft is big 2～10 millimeters, and magnetic conduction stationary ring 101 bottoms are the magnetic guiding loop bead; Border circular areas in the magnetic guiding loop bead is permanent magnetism assembly unit ring member installation place; With barrier cuffs 1031 on 12 the magnet ring fixed holes 1011 that are spacedly distributed on the circumference of center place circumference same radius of 12 magnetic ring component locking rings 1034,6 magnet rings that on the circumference between magnet ring fixed hole 1011 and the axis hole, are spacedly distributed are installed tapped holes 1012, said magnet ring fixed hole 1011 is installed tapped hole 1012 equal open-works with magnet ring;
Stable thin steel disk 1033 upwards; Permanent magnetism assembly unit ring member 103 is coaxial with magnetic conduction stationary ring 101; Permanent magnetism assembly unit ring member 103 is adsorbed in the permanent magnetism assembly unit ring member installation place of magnetic conduction stationary ring 101; Stable thin steel disk 1033 contacts with magnetic conduction stationary ring 101; The magnetic guiding loop bead lower surface of the lower surface of the assembly unit permanent-magnetic clamp 1032 in the permanent magnetism assembly unit ring member 103 and magnetic conduction stationary ring 101 is in same plane; The external diameter of the barrier cuffs 1031 in the permanent magnetism assembly unit ring member 103 is than the little 5～10mm of internal diameter of the magnetic guiding loop bead of magnetic conduction stationary ring 101, and 12 set screws 102 pass corresponding magnet ring fixed hole 1011 respectively and are threaded with magnetic ring component locking ring 1034 permanent magnetism assembly unit ring member 103 and 101 lockings of magnetic conduction stationary ring;
Said magnetic conduction rotating ring 2 tops are disc structure; Center hole be and rotor 4 tops the axle coaxial affixed screw thread axis hole, inner edge screw thread 202 is arranged on the screw thread shaft hole inner wall, be the installation place of rotor 4 under the screw thread axis hole; 4～6 auxiliary holes 203 are spacedly distributed on the outer side surface of magnetic conduction rotating ring 2; Magnetic conduction rotating ring 2 bottoms are the rotating ring lock flange of ring, 4～6 the rotating ring locking screws 201 that on the sidewall of rotating ring lock flange, are spacedly distributed, and rotating ring locking screw 201 is an open-work; Magnetic conduction rotating ring 2 is installed in through being threaded on the axle on rotor 4 tops, magnetic conduction rotating ring 2 and rotor 4 is locked in rotating ring locking screw 201 with jackscrew;
Axial clearance between said permanent magnetism static components 1 and the magnetic conduction rotating ring 2 is the gap between the magnetic guiding loop bead lower surface of the magnetic conduction stationary ring 101 in magnetic conduction rotating ring 2 upper surfaces and the permanent magnetism static components 1; By upper bearing (metal) 3 and the positioning control of lower bearing 5 on machine case; Axial clearance between permanent magnetism static components 1 and the magnetic conduction rotating ring 2 is 2～5mm; Under the strong magnetic field action that assembly unit permanent-magnetic clamp 1032 produces, form the suction of permanent magnetism static components 1 and magnetic conduction rotating ring 2;
Radial clearance between the axle on the interior hole circle of said permanent magnetism static components 1 and rotor 4 tops is 2～5mm, and the axle on rotor 4 tops is in the endoporus high speed rotation of permanent magnetism static components 1.
The internal diameter of said assembly unit permanent-magnetic clamp 1032 is 60～120mm, and external diameter is 2～2.5 times of internal diameter, and thickness is 10～20mm;
The material of said fan-shaped permanent magnet 1035 is ferromagnetic material NuFeB;
The material of said magnetic conduction stationary ring 101 is a carbon steel 25;
The material of said stable thin steel disk 1033 is a carbon steel 25;
The material of said barrier cuffs 1031 is stainless steel 1Cr18Ni9Ti;
The material of said magnetic conduction rotating ring 2 is alloyed steel 40Cr;
Said permanent magnetism static components 1 is 10000N～50000N with the suction of magnetic conduction rotating ring 2.
Beneficial effect of the present invention is that the present invention is a kind of heavy permanent magnetism suction bearing with assembly unit permanent-magnetic clamp structure, adopts fan-shaped set of permanent magnets to synthesize the large scale permanent-magnetic clamp, breaks through the magnetizer size restrictions, realizes that the permanent-magnetic clamp of heavy Permanent-magnet bearing is made; Adopt L shaped cross section magnetic conduction stationary ring, permanent-magnetic clamp and magnetic conduction rotating ring structure to realize closed magnetic circuit, make full use of magnetic property, realized surpassing the suction of 10000N, the permanent magnetism suction between permanent magnetism static components 1 and the magnetic conduction rotating ring 2 reaches 90～95% of rotor weight; Adopt the fan-shaped permanent magnet of isolating ring suit polylith of non-magnet_conductible material, the installation that realizes assembly unit permanent-magnetic clamp structure is with fixing; The magnetic conduction rotating ring is a high tenacity permeability alloys steel, can realize high speed rotating.The present invention is applicable to that the diameter of rotor shaft is a heavy high-speed rotating shaft system such as the above high speed centrifuge of 60mm or 60mm, molecular pump, flywheel shaft system.
Description of drawings
Fig. 1 is that permanent magnetism suction bearing-rolling bearing mixing bearing axle is a schematic representation;
Fig. 2 is heavy permanent magnetism suction bearing structure schematic representation;
Fig. 3 is an assembly unit permanent-magnetic clamp modular construction schematic representation;
Fig. 4 is a permanent magnetism assembly unit ring plan view;
Fig. 5 is permanent magnetism assembly unit ring member and magnetic conduction stationary ring applying installation process schematic representation.
Among the figure, 1--permanent magnetism static components, 2--magnetic conduction rotating ring, 3--upper bearing (metal), 4--rotor; The 5--lower bearing, the 6--screw rod, the 7--guiding is installed mandrel, 101--magnetic conduction stationary ring; The 102--set screw, 103--permanent magnetism assembly unit ring member, 1011--magnet ring fixed hole, the 1012--magnet ring is installed tapped hole; The 1031--barrier cuffs, 1032--assembly unit permanent-magnetic clamp, the stable thin steel disk of 1033--, 1034--magnetic ring component locking ring; The fan-shaped permanent magnet of 1035--, 201--rotating ring locking screw, 202--inner edge screw thread, 203--auxiliary hole.
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is further described.
Fig. 1 is that permanent magnetism suction bearing-rolling bearing mixing bearing axle is a schematic representation; Heavy permanent magnetism suction bearing with assembly unit permanent-magnetic clamp structure; Form by permanent magnetism static components 1 and magnetic conduction rotating ring 2; Magnetic conduction rotating ring 2 is coaxial affixed with the axle on rotor 4 tops of vertically setting, and the two ends up and down of the axle of rotor 4 are rotationally connected with lower bearing 5 and machine case formation through the upper bearing (metal) 3 that is rolling bearing respectively, and permanent magnetism static components 1 is fixed on the machine case on magnetic conduction rotating ring 2; Permanent magnetism static components 1 and magnetic conduction rotating ring 2 are coaxial and be enclosed within on the axle on rotor 4 tops; Radial clearance between the axle on the endoporus of permanent magnetism static components 1 and rotor 4 tops is 2～5mm, and the axle on rotor 4 tops is in the endoporus high speed rotation of permanent magnetism static components 1, and permanent magnetism static components 1 has 2～5mm axial clearance with magnetic conduction rotating ring 2; Permanent magnetism suction bearing and rolling bearing constitute mixing bearing axle system, and the permanent magnetism static components 1 of permanent magnetism suction bearing and the permanent magnetism suction between the magnetic conduction rotating ring 2 carry 90～95% weight of rotor.
The structure of the heavy permanent magnetism suction of embodiment bearing is as shown in Figure 2, and permanent magnetism static components 1 is made up of magnetic conduction stationary ring 101, set screw 102 and permanent magnetism assembly unit ring member 103.Permanent magnetism assembly unit ring member 103 is made up of barrier cuffs 1031, assembly unit permanent-magnetic clamp 1032 and stable thin steel disk 1033, and Fig. 3 is an assembly unit permanent-magnetic clamp modular construction schematic representation, the one circular ring of barrier cuffs 1031 for being made up of sidewall and base ring; The width of base ring is 8mm, and the thickness of base ring is 1mm, affixed 12 the magnetic ring component locking rings 1034 of level uniformly-spaced in the outside of sidewall; The interior circle of magnetic ring component locking ring 1034 is a worm structure; As shown in Figure 4, the circular magnet ring of assembly unit permanent-magnetic clamp 1032 for being assembled into by 4 identical fan-shaped permanent magnets 1035, the internal diameter of assembly unit permanent-magnetic clamp 1032 is 60mm; External diameter is 150mm, and thickness is 15mm.Internal diameter and the external diameter with assembly unit permanent-magnetic clamp 1032 is identical respectively with external diameter for the internal diameter of the stable thin steel disk 1033 of ring; Assembly unit permanent-magnetic clamp 1032 coaxial being adsorbed on the lower surface of stablizing thin steel disk 1033; The internal diameter loose fit of the external diameter of assembly unit permanent-magnetic clamp 1032 and stable thin steel disk 1033 and the sidewall of barrier cuffs 1031; Assembly unit permanent-magnetic clamp 1032 is embedded in the barrier cuffs 1031 with stable thin steel disk 1033, and the upper surface of stable thin steel disk 1033 and the upper edge of barrier cuffs 1031 are in same plane.
Magnetic conduction stationary ring 101 is a circle structure; The axial cross section of magnetic conduction stationary ring 101 is the L type; Center hole is the axis hole that passes the axle on rotor 4 tops; Magnetic conduction stationary ring 101 bottoms are the magnetic guiding loop bead, and the border circular areas in the magnetic guiding loop bead is permanent magnetism assembly unit ring member installation place, with barrier cuffs 1031 on 12 the magnet ring fixed holes 1011 that are spacedly distributed on the circumference of place, center circumference same radius of 12 magnetic ring component locking rings 1034; 6 magnet rings that on the circumference between magnet ring fixed hole 1011 and the axis hole, are spacedly distributed are installed tapped hole 1012, and said magnet ring fixed hole 1011 is installed tapped hole 1012 equal open-works with magnet ring.
Stable thin steel disk 1033 upwards; Permanent magnetism assembly unit ring member 103 is coaxial with magnetic conduction stationary ring 101; Permanent magnetism assembly unit ring member 103 is adsorbed in the permanent magnetism assembly unit ring member installation place of magnetic conduction stationary ring 101; Stable thin steel disk 1033 contacts with magnetic conduction stationary ring 101; The magnetic guiding loop bead lower surface of the lower surface of the assembly unit permanent-magnetic clamp 1032 in the permanent magnetism assembly unit ring member 103 and magnetic conduction stationary ring 101 is in same plane; The external diameter of the barrier cuffs 1031 in the permanent magnetism assembly unit ring member 103 is than the little 8mm of internal diameter of the magnetic guiding loop bead of magnetic conduction stationary ring 101, and 12 set screws 102 pass corresponding magnet ring fixed hole 1011 respectively and are threaded with magnetic ring component locking ring 1034 permanent magnetism assembly unit ring member 103 and 101 lockings of magnetic conduction stationary ring.
Magnetic conduction rotating ring 2 tops are disc structure; Center hole be and rotor 4 tops the axle coaxial affixed screw thread axis hole, inner edge screw thread 202 is arranged on the screw thread shaft hole inner wall, be the installation place of rotor 4 under the screw thread axis hole; 4 auxiliary holes 203 are spacedly distributed on the outer side surface of magnetic conduction rotating ring 2; Magnetic conduction rotating ring 2 bottoms are the rotating ring lock flange of ring, 4 the rotating ring locking screws 201 that on the sidewall of rotating ring lock flange, are spacedly distributed, and rotating ring locking screw 201 is an open-work; Magnetic conduction rotating ring 2 is installed in through being threaded on the axle on rotor 4 tops, magnetic conduction rotating ring 2 and rotor 4 is locked in rotating ring locking screw 201 with jackscrew.
Axial clearance between permanent magnetism static components 1 and the magnetic conduction rotating ring 2 is the gap between the magnetic guiding loop bead lower surface of magnetic conduction stationary ring 101 in magnetic conduction rotating ring 2 upper surfaces and the permanent magnetism static components 1; By upper bearing (metal) 3 and the positioning control of lower bearing 5 on machine case; Axial clearance between permanent magnetism static components 1 and the magnetic conduction rotating ring 2 is 2.5mm; Under the strong magnetic field action that assembly unit permanent-magnetic clamp 1032 produces, form the above suction of 10000N between permanent magnetism static components 1 and the magnetic conduction rotating ring 2.
The material of fan-shaped permanent magnet 1035 is ferromagnetic material NuFeB, and the material of magnetic conduction stationary ring 101 is a carbon steel 25, and the material of stable thin steel disk 1033 is a carbon steel 25, and the material of barrier cuffs 1031 is stainless steel 1Cr18Ni9Ti, and the material of magnetic conduction rotating ring 2 is alloyed steel 40Cr.
For safety and precise places permanent magnetism assembly unit ring member 103 in the permanent magnetism assembly unit ring member installation place of magnetic conduction stationary ring 101; Adopt permanent magnetism assembly unit ring member shown in Figure 5 and magnetic conduction stationary ring applying installation process; Magnetic conduction stationary ring 101 is installed mandrel 7 in radial location with permanent magnetism assembly unit ring member 103 through guiding; Move axially, through 6 magnet rings on the magnetic conduction stationary ring 101 tapped hole 1012 is installed respectively with 6 screw rods 6 permanent magnetism assembly unit ring member 103 is withstood, regulate 6 screw rods 6 simultaneously; Axial distance between permanent magnetism assembly unit ring member 103 and the magnetic conduction stationary ring 101 is slowly reduced; Fit tightly until permanent magnetism assembly unit ring member 103 and magnetic conduction stationary ring 101, remove 6 screw rods, with set screw 102 permanent magnetism assembly unit ring member 103 and magnetic conduction stationary ring 101 are locked again.
The Permanent-magnet bearing magnetic attraction of present embodiment can reach more than the 10000N, and the magnetic conduction rotating ring is a high tenacity permeability alloys steel, can realize high speed rotating, can be used in rotary speed greater than the 3600r/min heavy machinery.
The above; Be merely the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technician who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (8)
1. heavy permanent magnetism suction bearing with assembly unit permanent-magnetic clamp structure; Form by permanent magnetism static components (1) and magnetic conduction rotating ring (2); Magnetic conduction rotating ring (2) is coaxial affixed with the axle on rotor (4) top that vertically is provided with; The two ends up and down of the axle of rotor (4) are rotationally connected with the machine case formation through upper bearing (metal) (3) and the lower bearing (5) that is rolling bearing respectively; Permanent magnetism static components (1) is fixed on the machine case on magnetic conduction rotating ring (2); Permanent magnetism static components (1) with magnetic conduction rotating ring (2) coaxial and be enclosed within rotor (4) top the axle on; Between the axle on the endoporus of permanent magnetism static components (1) and rotor (4) top radial clearance is arranged, permanent magnetism static components (1) has axial clearance with magnetic conduction rotating ring (2), thereby realizes the non-contact carrying; It is characterized in that; Said permanent magnetism static components (1) is made up of magnetic conduction stationary ring (101), set screw (102) and permanent magnetism assembly unit ring member (103), and said permanent magnetism assembly unit ring member (103) is formed the one circular ring of barrier cuffs (1031) for being made up of sidewall and base ring by barrier cuffs (1031), assembly unit permanent-magnetic clamp (1032) and stable thin steel disk (1033); The width of base ring is 5～10mm; The thickness of base ring is 1～2mm, affixed 12 the magnetic ring component locking rings of level (1034) uniformly-spaced in the outside of sidewall, and the interior circle of magnetic ring component locking ring (1034) is a worm structure; The circular magnet ring of assembly unit permanent-magnetic clamp (1032) for being assembled into by 4～8 identical fan-shaped permanent magnets (1035); Internal diameter and the external diameter with assembly unit permanent-magnetic clamp (1032) is identical respectively with external diameter for the internal diameter of the stable thin steel disk (1033) of ring, and assembly unit permanent-magnetic clamp (1032) is coaxial to be adsorbed on the lower surface of stablizing thin steel disk (1033), the internal diameter loose fit of the external diameter of assembly unit permanent-magnetic clamp (1032) and stable thin steel disk (1033) and the sidewall of barrier cuffs (1031); Assembly unit permanent-magnetic clamp (1032) and stable thin steel disk (1033) are embedded in the barrier cuffs (1031), and the upper surface of stable thin steel disk (1033) and the upper edge of barrier cuffs (1031) are in same plane;
Said magnetic conduction stationary ring (101) is a circle structure; The axial cross section of magnetic conduction stationary ring (101) is the L type; Center hole is the axis hole that passes the axle on rotor (4) top; Magnetic conduction stationary ring (101) bottom is the magnetic guiding loop bead; Border circular areas in the magnetic guiding loop bead is permanent magnetism assembly unit ring member installation place; With the circumference of place, the center of last 12 the magnetic ring component locking rings of barrier cuffs (1031) (1034) circumference same radius on 12 the magnet ring fixed holes (1011) that are spacedly distributed, 6 magnet rings that on the circumference between magnet ring fixed hole (1011) and the axis hole, are spacedly distributed are installed tapped holes (1012), said magnet ring fixed hole (1011) is installed the equal open-work of tapped hole (1012) with magnet ring;
Stable thin steel disk (1033) upwards; Permanent magnetism assembly unit ring member (103) is coaxial with magnetic conduction stationary ring (101); Permanent magnetism assembly unit ring member (103) is adsorbed in the permanent magnetism assembly unit ring member installation place of magnetic conduction stationary ring (101); Stable thin steel disk (1033) contacts with magnetic conduction stationary ring (101); The lower surface of the assembly unit permanent-magnetic clamp (1032) in the permanent magnetism assembly unit ring member (103) and the magnetic guiding loop bead lower surface of magnetic conduction stationary ring (101) are in same plane; The external diameter of the barrier cuffs (1031) in the permanent magnetism assembly unit ring member (103) is than the little 5～10mm of internal diameter of the magnetic guiding loop bead of magnetic conduction stationary ring (101), and 12 set screws (102) pass corresponding magnet ring fixed hole (1011) respectively and are threaded with magnetic ring component locking ring (1034) permanent magnetism assembly unit ring member (103) and magnetic conduction stationary ring (101) locking;
Said magnetic conduction rotating ring (2) top is disc structure; Center hole be with rotor (4) top the axle coaxial affixed screw thread axis hole; Inner edge screw thread (202) is arranged on the screw thread shaft hole inner wall; Under the screw thread axis hole installation place of rotor (4), 4～6 auxiliary holes (203) that are spacedly distributed on the outer side surface of magnetic conduction rotating ring (2), magnetic conduction rotating ring (2) bottom is the rotating ring lock flange of ring; 4～6 rotating ring locking screws (201) are spacedly distributed on the sidewall of rotating ring lock flange; Rotating ring locking screw (201) is an open-work, and magnetic conduction rotating ring (2) is installed in through being threaded on the axle on rotor (4) top, locks in the screw (201) magnetic conduction rotating ring (2) and rotor (4) locking at rotating ring with jackscrew;
Axial clearance between said permanent magnetism static components (1) and the magnetic conduction rotating ring (2) is the interval between the magnetic guiding loop bead lower surface of the magnetic conduction stationary ring (101) in magnetic conduction rotating ring (2) upper surface and the permanent magnetism static components (1); By upper bearing (metal) (3) and the positioning control of lower bearing (5) on machine case; Axial clearance between permanent magnetism static components (1) and the magnetic conduction rotating ring (2) is 2～5mm; Under the strong magnetic field action that assembly unit permanent-magnetic clamp (1032) produces, form the suction of permanent magnetism static components (1) and magnetic conduction rotating ring (2);
Radial clearance between the axle on the endoporus of said permanent magnetism static components (1) and rotor (4) top is 2～5mm, and the axle on rotor (4) top is in the endoporus high speed rotation of permanent magnetism static components (1).
2. a kind of heavy permanent magnetism suction bearing with assembly unit permanent-magnetic clamp structure according to claim 1 is characterized in that the internal diameter of said assembly unit permanent-magnetic clamp (1032) is 60～120mm, and external diameter is 2～2.5 times of internal diameter, and thickness is 10～20mm.
3. a kind of heavy permanent magnetism suction bearing with assembly unit permanent-magnetic clamp structure according to claim 1 is characterized in that the material of said fan-shaped permanent magnet (1035) is ferromagnetic material NuFeB.
4. a kind of heavy permanent magnetism suction bearing with assembly unit permanent-magnetic clamp structure according to claim 1 is characterized in that the material of said magnetic conduction stationary ring (101) is a carbon steel 25.
5. a kind of heavy permanent magnetism suction bearing with assembly unit permanent-magnetic clamp structure according to claim 1 is characterized in that, the material of said stable thin steel disk (1033) is a carbon steel 25.
6. a kind of heavy permanent magnetism suction bearing with assembly unit permanent-magnetic clamp structure according to claim 1 is characterized in that the material of said barrier cuffs (1031) is stainless steel 1Cr18Ni9Ti.
7. a kind of heavy permanent magnetism suction bearing with assembly unit permanent-magnetic clamp structure according to claim 1 is characterized in that the material of said magnetic conduction rotating ring (2) is alloyed steel 40Cr.
8. a kind of heavy permanent magnetism suction bearing with assembly unit permanent-magnetic clamp structure according to claim 1 is characterized in that, said permanent magnetism static components (1) is 10000N～50000N with the suction of magnetic conduction rotating ring (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210175341.3A CN102705367B (en) | 2012-05-30 | 2012-05-30 | Heavy-duty permanent magnetic attraction bearing with assembled permanent magnetic ring structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210175341.3A CN102705367B (en) | 2012-05-30 | 2012-05-30 | Heavy-duty permanent magnetic attraction bearing with assembled permanent magnetic ring structure |
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| CN102705367A true CN102705367A (en) | 2012-10-03 |
| CN102705367B CN102705367B (en) | 2014-06-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105443576A (en) * | 2015-12-18 | 2016-03-30 | 贵州大学 | Large bearing axial mixing magnetic bearing |
| CN112398269A (en) * | 2020-11-30 | 2021-02-23 | 华中科技大学 | Stator hybrid excitation flywheel energy storage motor |
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| CN202628815U (en) * | 2012-05-30 | 2012-12-26 | 清华大学 | Heavy type permanent magnetic suction bearing provided with assembly permanent magnetic ring structure |
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